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Effect of synthesis conditions on preparation of mesoporous titania–silica by a modified sol–gel technique using a cationic surfactant

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Titania–silica mesoporous materials have been synthesized by a modified sol–gel technique using a cationic surfactant. The synthesis process was studied using statistical design of experiments to achieve the best conditions for titania–silica preparation. The synthesized materials were characterized by XRD, FT-IR, SEM and surface area measurements. The XRD and SEM results showed an amorphous structure of titania–silica. The surface area measurements using nitrogen adsorption showed type-IV isotherms which indicate the formation of mesoporous structure. A high surface area can be obtained (685 m2/g). The crystal size of titania–silica calculated using Scherrer's equation was found to be in the range 8–15 nm.

Affiliations: 1: Central Metallurgical R&D Institute, Department of Nanostructured Material, Helwan, Cairo, Egypt; 2: Faculty of Science, Chemistry Department, Al-Azhar University, Nasser City, Cairo, Egypt


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